Hamas militants have launched dozens of rockets at Israel after Israeli air strikes killed senior commanders and felled a multi-storey building in Gaza.
The deadly exchange of fire between Palestinian militants in the Gaza Strip and the Israeli military has escalated significantly, with the UN fearing a "full-scale war".
Seven children and two adults have been killed in a shooting at a school in the Russian city of Kazan, officials say.
US Republicans are to vote on whether to oust one of their leaders, Liz Cheney, over her repeated criticism of former President Donald Trump.
Israel has declared a state of emergency in the central city of Lod after rioting by Israeli Arabs, as conflict between Israeli forces and Palestinian militants intensified.
The authorities in the Indian capital Delhi have called for help from the army as the city grapples with a brutal second wave of Covid-19 cases.
Families in Israel have begun burying their loved ones after at least 45 people died in a crush at a crowded Orthodox Jewish festival overnight.
India's deadly Covid-19 second wave has devastated big cities like Delhi, Mumbai, Lucknow and Pune. Hospitals and crematoriums have run out of space, and funerals are taking place in car parks. But the pandemic has now firmly gripped many smaller cities, towns and villages where the devastation is largely under-reported.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.